You can insert your first nuvaring at any time. Use a backup method of birth control for the first seven days. After that, you should insert nuvaring on schedule, regardless of bleeding.
No, you can't insert NuvaRing too far. The vagina ends in a "dead end" -- it's even called the "cul de sac." NuvaRing can't "get lost" in the vagina. NuvaRing will work no matter where it's place in the vagina, but most women find it more comfortable to insert it high into the vagina near the cervix.
NuvaRing may or may not stop your period if you insert it on the first day of bleeding.
You can insert your first NuvaRing anytime in your cycle. If you insert it in the first five days of bleeding, you have immediate protection. If you insert it at any other time in your cycle, you should use a backup method for seven days. When you insert your second or later rings, you may still be having some withdrawal bleeding when it's time to insert the next ring. That's fine -- you should insert it on schedule regardless of any bleeding.
NuvaRing must be inserted on the same day of the week you took it out. It does not need to be inserted at the exact time.
The protection is linked to when you start using NuvaRing
Yes, you should insert NuvaRing as soon as you remember. Use a backup method of birth control until you've used the ring correctly for seven days.
You can leave NuvaRing in for four weeks. At that point, if you don't insert a new ring, you will not be protected.
If you leave in NuvaRing for four weeks, insert the new ring at the end of the four weeks. No backup method is needed.
If you leave the last NuvaRing in for four weeks, insert the new one immediately. If you did not insert it immediately, you must use a backup method until you've used the ring correctly for seven days.
If you insert NuvaRing early it may shorten your period. It will not increase your risk of pregnancy. The new insertion day is now the day of the week you'll remove it (in three weeks) and the weekday that you'll insert the new one (one week after removing this one).
No, you only need to insert NuvaRing on the same day of the week every time, not the same time of day.